The best way to hang pictures on a wall
Use a paint brush to remove any excess dust and dirt from the wall. Lightly brush the bricks with water, this helps the plaster to stick. Lay drop sheets in front of the wall.
Put on your dust mask, safety glasses and protective gloves. Pour water into your mixing bucket. Add three buckets of sand, half a bucket of cement, and half a bucket of lime. Use the mixer to combine all of the ingredients.
Once the plaster is touch dry, screed the wall. Do this by dragging the straight edge along the wall. Screeding takes any excess plaster off the wall to give it a nice flat finish. Start at one side of the wall and work your way across, keeping the straight edge level. Then work your way back across the wall.
Hold the spirit level vertically against the wall to check that the plaster is flat and plumb. If there is too much plaster and the wall isn't flat, rub the spirit level into the plaster until it's level. Repeat this for the other side of the wall.
Use the straight edge to screed the wall, back to the lines you created with the spirit level. After doing this, use the spirit level to check that it's plumb.
After the last screed, there might be areas where the plaster is uneven or patchy. Use the trowel and hawk to apply plaster where it's needed.
After patching up the wall, run the straight edge across it, to make it level. This should be easier because the base layer of plaster will be drier.